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A CHAIN of PhiLOSOPHICAL REFLEXIONS

A N D

INQUIRIES

TUES

Concerning the Virtues of TAR WATER, And divers other Subječts connected together

and arising one from another.

BY THE
Right Rev. Dr. GEORGE BERKELEY,

Lord Bishop of CLOYNE,
And Author of The Minute Philosopher.

As we have opportunity, let us do good unto all men. Gal. vi. 10. Hoc opus, hoc fiudium, parvi properents et ampli. Hor.

The SECOND EDITION, Improved and Corrected by the AUTHOR.

DUBLIN Printed,

LONDON Re-printed, For W. Innys, and C. Hitch, in Pater-nofter-row; and C. Davis in Holbourn. MDCCXLIV.

[Price Two Shillings.]

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A CHAIN of PhilosoPHICAL REFLEXIONS

AND INQUIRIES, &c.

M OR INTRODUCTION to the following

piece I assure the reader, that nothing could, in my present situation, have in

duced me to be at the pains of writing it, but a firm belief that it would prove a valuable present to the public. What entertainment soever the reasoning or notional part may afford the mind, I will venture to say, the other part seemeth fo surely calculated to do good to the body, that both must be gainers. For if the lute be not well tuned, the musician fails of his harmony. And in our present state, the operations of the mind, so far depend on the right tone or good condition of it's instrument, that any thing which greatly contributes to preserve or recover the health of the body, is well worth the attention of the mind. These considerations have moved me to communicate to the public the falutary virtues of tar-water; to which I thought myself indispensably obliged, by the duty every man owes to mankind. And, as effects are linked with their causes, my thoughts on this low, but useful theme led to far

A 2

ther child

(4) ther inquiries, and those on to others remote, pero haps, and speculative, but, I hope, not alcogether useless or unentertaining.

1. TN certain parts of America, tar-water is

I made by putting a quart of cold water to a quart of tar, and stirring them well together in a vessel, which is left ftanding till the tar sinks to the bottom. A glass of clear water being poured off for a draught is replaced by the same quantity of fresh water, the vessel being shaken and left to stand as before. And this is repeated for every glass, so long as the tar continues to impregnate the water sufficiently, which will appear by the smell and taste. But as this method produceth tarwater of different degrees of strength, I chufe ta make it in the following manner : Pour a gallon of cold water on a quart of tar, and stir and mix them thoroughly wich a ladle or flat stick for the space of three or four minutes, after which the versel must stand eight and forty hours that the tar inay have time to subside, when the clear water is to be poured off and kept for ufe, no more being made from the fame tar, which may still serve for common purpofes.

2 This cold infusion of tar hath been used in fome of our colonies, as a prefervative or preparative against the small-pox, which foreign practice induced me to try it in my own neighbourhood, when the small.pox raged with great violence. And the trial fully answered my expectation : all those, within my knowledge, who took the car-water having either escaped that distemper, or had it very favourably. In one family there was a remarkable instance of seven children, who came all very well through the small-pox, except one young

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